LG M6100 User Manual page 135

GENERAL FUNCTIONS
If Call waiting is activated, you can put the first call
on hold and answer the second, by pressing S or
by selecting the left soft key, then Hold & Answer.
You can end the current call and answer the waiting
call by selecting the left soft key and then End &
Answer.
Rejecting an incoming call
You can reject an incoming call without answering
by simply pressing the E key.
During a call, you can reject an incoming call by
pressing the left soft key [Menu] key and selecting
the Conference/Reject or by pressing the E.
Muting the microphone
You can mute the microphone during a call by
pressing the [Options] key then selecting Mute on.
The handset can be unmuted by selecting Mute off.
When the handset is muted, the caller cannot hear
you, but you can still hear them.
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Switching DTMF tones on during a call
To turn DTMF tones on during a call, press the left
soft key, and then select DTMF on. DTMF tones can
be turned off the same way. DTMF tones allow your
phone to make use of an automated switchboard.
Multiparty or conference calls
The multiparty or conference service provides you
with the ability to have a simultaneous conversation
with more than one caller, if your network operator
supports this feature. A multiparty call can only be
set up when you have one active call and one call
on hold, both calls having been answered. Once a
multiparty call is set up, calls can be added,
disconnected or separated (that is, removed from
the multiparty call but still connected to you) by the
person who set up the multiparty call. These options
are all available from the In-Call menu. The
maximum callers in a multiparty call are five. Once
started, you are in control of the multiparty call, and
only you can add callers to the multiparty call.